Fig. 1From: An early warning precision public health approach for assessing COVID-19 vulnerability in the UK: the Moore-Hill Vulnerability Index (MHVI)Schematic of data harmonisation steps for East Midlands Ambulance Service NHS Trust (EMAS) records of suspected severe illness from COVID-19 and GOV.UK records of cases confirmed by laboratory testing. Harmonisation steps are included for the full dataset and three cumulative periods, C1, C2 and C3Back to article page